From 8d470c2e63c2dac334ccff2bcda9a0607ce76377 Mon Sep 17 00:00:00 2001
From: ameerj <52414509+ameerj@users.noreply.github.com>
Date: Sun, 14 Mar 2021 01:23:56 -0500
Subject: shader: Implement FMNMX

And add a const in FCMP
---
 .../translate/impl/floating_point_compare.cpp      |  2 +-
 .../translate/impl/floating_point_min_max.cpp      | 57 ++++++++++++++++++++++
 .../maxwell/translate/impl/not_implemented.cpp     | 12 -----
 3 files changed, 58 insertions(+), 13 deletions(-)
 create mode 100644 src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_min_max.cpp

(limited to 'src/shader_recompiler/frontend/maxwell/translate')

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp
index 21cb80d67..f254ecb3a 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_compare.cpp
@@ -88,7 +88,7 @@ void FCMP(TranslatorVisitor& v, u64 insn, const IR::U32& src_a, const IR::F32& o
 
     const IR::F32 zero{v.ir.Imm32(0.0f)};
     const IR::F32 neg_zero{v.ir.Imm32(-0.0f)};
-    IR::FpControl control{.fmz_mode{fcmp.ftz != 0 ? IR::FmzMode::FTZ : IR::FmzMode::None}};
+    const IR::FpControl control{.fmz_mode{fcmp.ftz != 0 ? IR::FmzMode::FTZ : IR::FmzMode::None}};
     const IR::U1 cmp_result{FloatingPointCompare(v.ir, operand, zero, fcmp.compare_op, control)};
     const IR::U32 src_reg{v.X(fcmp.src_reg)};
     const IR::U32 result{v.ir.Select(cmp_result, src_reg, src_a)};
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_min_max.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_min_max.cpp
new file mode 100644
index 000000000..c3180a9bd
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/floating_point_min_max.cpp
@@ -0,0 +1,57 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "common/bit_field.h"
+#include "common/common_types.h"
+#include "shader_recompiler/frontend/maxwell/translate/impl/impl.h"
+
+namespace Shader::Maxwell {
+namespace {
+void FMNMX(TranslatorVisitor& v, u64 insn, const IR::F32& src_b) {
+    union {
+        u64 insn;
+        BitField<0, 8, IR::Reg> dest_reg;
+        BitField<8, 8, IR::Reg> src_a_reg;
+        BitField<39, 3, IR::Pred> pred;
+        BitField<42, 1, u64> neg_pred;
+        BitField<44, 1, u64> ftz;
+        BitField<45, 1, u64> negate_b;
+        BitField<46, 1, u64> abs_a;
+        BitField<48, 1, u64> negate_a;
+        BitField<49, 1, u64> abs_b;
+    } const fmnmx{insn};
+
+    const IR::U1 pred{v.ir.GetPred(fmnmx.pred)};
+    const IR::F32 op_a{v.ir.FPAbsNeg(v.F(fmnmx.src_a_reg), fmnmx.abs_a != 0, fmnmx.negate_a != 0)};
+    const IR::F32 op_b = v.ir.FPAbsNeg(src_b, fmnmx.abs_b != 0, fmnmx.negate_b != 0);
+
+    const IR::FpControl control{
+        .no_contraction{false},
+        .rounding{IR::FpRounding::DontCare},
+        .fmz_mode{fmnmx.ftz != 0 ? IR::FmzMode::FTZ : IR::FmzMode::None},
+    };
+    IR::F32 max{v.ir.FPMax(op_a, op_b, control)};
+    IR::F32 min{v.ir.FPMin(op_a, op_b, control)};
+
+    if (fmnmx.neg_pred != 0) {
+        std::swap(min, max);
+    }
+
+    v.F(fmnmx.dest_reg, IR::F32{v.ir.Select(pred, min, max)});
+}
+} // Anonymous namespace
+
+void TranslatorVisitor::FMNMX_reg(u64 insn) {
+    FMNMX(*this, insn, GetFloatReg20(insn));
+}
+
+void TranslatorVisitor::FMNMX_cbuf(u64 insn) {
+    FMNMX(*this, insn, GetFloatCbuf(insn));
+}
+
+void TranslatorVisitor::FMNMX_imm(u64 insn) {
+    FMNMX(*this, insn, GetFloatImm20(insn));
+}
+
+} // namespace Shader::Maxwell
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
index e1904472f..01ecbb4cc 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/not_implemented.cpp
@@ -201,18 +201,6 @@ void TranslatorVisitor::FCHK_imm(u64) {
     ThrowNotImplemented(Opcode::FCHK_imm);
 }
 
-void TranslatorVisitor::FMNMX_reg(u64) {
-    ThrowNotImplemented(Opcode::FMNMX_reg);
-}
-
-void TranslatorVisitor::FMNMX_cbuf(u64) {
-    ThrowNotImplemented(Opcode::FMNMX_cbuf);
-}
-
-void TranslatorVisitor::FMNMX_imm(u64) {
-    ThrowNotImplemented(Opcode::FMNMX_imm);
-}
-
 void TranslatorVisitor::FSET_reg(u64) {
     ThrowNotImplemented(Opcode::FSET_reg);
 }
-- 
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